pub fn shutdown() -> !Expand description
关机指令
psci {
migrate = <0xc4000005>;
cpu_on = <0xc4000003>;
cpu_off = <0x84000002>;
cpu_suspend = <0xc4000001>;
method = "smc";
compatible = "arm,psci-1.0", "arm,psci-0.2", "arm,psci";
};